./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d452f938d74713dbff7e0330f8ef393409d67ffe .................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:58,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:58,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:58,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:58,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:58,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:58,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:58,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:58,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:58,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:58,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:58,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:58,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:58,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:58,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:58,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:58,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:58,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:58,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:58,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:58,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:58,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:58,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:58,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:58,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:58,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:58,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:58,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:58,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:58,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:58,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:58,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:58,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:58,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:58,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:58,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:58,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:58,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:58,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:58,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:58,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:58,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:21:58,831 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:58,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:58,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:58,833 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:58,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:58,833 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:58,833 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:58,834 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:58,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:58,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:58,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:58,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:58,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:58,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:58,836 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:58,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:21:58,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:21:58,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:58,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:58,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:58,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:58,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:58,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:58,838 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:21:58,839 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:21:58,839 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:21:58,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:58,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:58,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:58,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:58,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:58,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:58,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:58,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:58,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:58,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:58,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:58,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:58,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:58,843 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d452f938d74713dbff7e0330f8ef393409d67ffe [2021-10-11 02:21:59,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:59,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:59,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:59,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:59,185 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:59,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2021-10-11 02:21:59,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/data/6ad78b104/bedc94c61e524c2c87916c2d54fbee94/FLAG91a473164 [2021-10-11 02:21:59,812 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:59,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2021-10-11 02:21:59,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/data/6ad78b104/bedc94c61e524c2c87916c2d54fbee94/FLAG91a473164 [2021-10-11 02:22:00,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/data/6ad78b104/bedc94c61e524c2c87916c2d54fbee94 [2021-10-11 02:22:00,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:00,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:00,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:00,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:00,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:00,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5628470a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00, skipping insertion in model container [2021-10-11 02:22:00,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:00,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:00,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:00,380 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:00,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:00,409 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:00,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00 WrapperNode [2021-10-11 02:22:00,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:00,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:00,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:00,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:00,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:00,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:00,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:00,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:00,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... [2021-10-11 02:22:00,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:00,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:00,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:00,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:00,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:22:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:22:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:00,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:00,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:00,930 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:22:00,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:00 BoogieIcfgContainer [2021-10-11 02:22:00,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:00,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:00,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:00,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:00,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:00" (1/3) ... [2021-10-11 02:22:00,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcbbcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:00, skipping insertion in model container [2021-10-11 02:22:00,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:00" (2/3) ... [2021-10-11 02:22:00,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcbbcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:00, skipping insertion in model container [2021-10-11 02:22:00,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:00" (3/3) ... [2021-10-11 02:22:00,964 INFO L111 eAbstractionObserver]: Analyzing ICFG derefAfterFree1.c [2021-10-11 02:22:00,979 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:00,995 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:22:01,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:22:01,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:01,033 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:22:01,033 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:01,033 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:01,033 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:01,034 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:01,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:01,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 02:22:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:22:01,051 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:01,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:22:01,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2021-10-11 02:22:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:01,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1522, now seen corresponding path program 1 times [2021-10-11 02:22:01,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:01,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641511688] [2021-10-11 02:22:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:01,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641511688] [2021-10-11 02:22:01,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:01,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:22:01,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961100559] [2021-10-11 02:22:01,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:01,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:01,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:01,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,233 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2021-10-11 02:22:01,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:01,251 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-11 02:22:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:01,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:22:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:01,262 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:22:01,263 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:22:01,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:22:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:22:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:22:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-11 02:22:01,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 2 [2021-10-11 02:22:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:01,320 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-11 02:22:01,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-11 02:22:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:22:01,321 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:01,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:22:01,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:01,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2021-10-11 02:22:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:01,323 INFO L82 PathProgramCache]: Analyzing trace with hash 47218, now seen corresponding path program 1 times [2021-10-11 02:22:01,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:01,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714832462] [2021-10-11 02:22:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:01,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714832462] [2021-10-11 02:22:01,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:01,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:22:01,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431092393] [2021-10-11 02:22:01,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:01,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:01,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:01,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,366 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2021-10-11 02:22:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:01,386 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-10-11 02:22:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:01,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:22:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:01,388 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:22:01,389 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:22:01,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:22:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:22:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:22:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-10-11 02:22:01,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 3 [2021-10-11 02:22:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:01,394 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-10-11 02:22:01,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-10-11 02:22:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:22:01,395 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:01,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:22:01,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:01,396 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2021-10-11 02:22:01,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:01,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1463796, now seen corresponding path program 1 times [2021-10-11 02:22:01,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:01,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179662454] [2021-10-11 02:22:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:01,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179662454] [2021-10-11 02:22:01,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:01,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:22:01,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475942783] [2021-10-11 02:22:01,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:01,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:01,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:01,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,445 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 3 states. [2021-10-11 02:22:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:01,459 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-11 02:22:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:01,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:22:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:01,460 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:22:01,460 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:22:01,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:22:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:22:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:22:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-11 02:22:01,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 4 [2021-10-11 02:22:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:01,464 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-11 02:22:01,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:01,464 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-11 02:22:01,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:22:01,465 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:01,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:22:01,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:22:01,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2021-10-11 02:22:01,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:01,467 INFO L82 PathProgramCache]: Analyzing trace with hash 45377718, now seen corresponding path program 1 times [2021-10-11 02:22:01,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:01,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247464293] [2021-10-11 02:22:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:01,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:01,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:01,545 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:22:01,545 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:01,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:22:01,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:01 BoogieIcfgContainer [2021-10-11 02:22:01,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:01,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:01,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:01,574 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:01,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:00" (3/4) ... [2021-10-11 02:22:01,576 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:22:01,608 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebff2d6-0046-4923-bd21-f0e56e1697fb/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:01,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:01,610 INFO L168 Benchmark]: Toolchain (without parser) took 1445.83 ms. Allocated memory is still 94.4 MB. Free memory was 62.6 MB in the beginning and 59.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:01,611 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:01,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.59 ms. Allocated memory is still 94.4 MB. Free memory was 62.4 MB in the beginning and 72.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:01,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 71.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:01,613 INFO L168 Benchmark]: Boogie Preprocessor took 22.57 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 70.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:01,614 INFO L168 Benchmark]: RCFGBuilder took 464.63 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 57.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:01,615 INFO L168 Benchmark]: TraceAbstraction took 632.41 ms. Allocated memory is still 94.4 MB. Free memory was 57.1 MB in the beginning and 60.7 MB in the end (delta: -3.7 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:01,615 INFO L168 Benchmark]: Witness Printer took 34.94 ms. Allocated memory is still 94.4 MB. Free memory was 60.7 MB in the beginning and 59.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:01,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.59 ms. Allocated memory is still 94.4 MB. Free memory was 62.4 MB in the beginning and 72.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 71.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.57 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 70.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 464.63 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 57.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 632.41 ms. Allocated memory is still 94.4 MB. Free memory was 57.1 MB in the beginning and 60.7 MB in the end (delta: -3.7 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 34.94 ms. Allocated memory is still 94.4 MB. Free memory was 60.7 MB in the beginning and 59.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int* p = malloc(10 * sizeof(int)); [L6] free(p) [L6] free(p) [L6] free(p) [L14] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 17 SDslu, 1 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...